using System;
using System.ComponentModel;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using System.Windows;
using System.Net.Sockets;
using log4net;
using System.Net.Http;
using Microsoft.Win32;
using chatclient.Data;
using System.Net;
using static System.Windows.Forms.VisualStyles.VisualStyleElement.StartPanel;
using Microsoft.VisualBasic.ApplicationServices;
using MaterialDesignThemes.Wpf;


namespace chatclient
{
    /// <summary>
    /// LoginWindow.xaml 的交互逻辑
    /// </summary>
    public partial class LoginWindow : Window, INotifyPropertyChanged
    {
        private static readonly ILog log = LogManager.GetLogger(typeof(LoginWindow));
        public LoginWindow()
        {
            InitializeComponent();
            this.DataContext = this;
        }
        public event PropertyChangedEventHandler? PropertyChanged;
        private void Update(string UpdateName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(UpdateName));
        }
        public static string UserName { get; set; } = "";
        public static string UserPassword { get; set; } = "";
        public static string SignName { get; set; } = "";
        public static string SignPassword1 { get; set; } = "";
        public static string SignPassword2 { get; set; } = "";
        private string? _LoginMsg;
        public string? LoginMsg
        {
            get { return _LoginMsg; }
            set
            {
                _LoginMsg = value;
                Update("LoginMsg");
            }
        }
        private string? _SignMsg;
        public string? SignMsg
        {
            get { return _SignMsg; }
            set
            {
                _SignMsg = value;
                Update("SignMsg");
            }
        }
        private bool _SaveAccount;
        public bool SaveAccount
        {
            get { return _SaveAccount; }
            set
            {
                _SaveAccount = value;
                Update("SaveAccount");
            }
        }
        private async void Login_Click(object sender, RoutedEventArgs e)
        {
            if (UserName == "")
            {
                LoginMsg = "用户名不能为空";
            }
            else if (UserPassword == "")
            {
                LoginMsg = "密码不能为空";
            }
            else
            {
                await Login(false, UserName, UserPassword);
            }
        }
        private void Sign_Click(object sender, RoutedEventArgs e)
        {
            if (SignName == "")
            {
                SignMsg = "用户名不能为空";
            }
            else if (SignPassword1 == "")
            {
                SignMsg = "密码不能为空";
            }
            else if (SignPassword2 == "")
            {
                SignMsg = "请再次确认密码";
            }
            else if (SignPassword1 != SignPassword2)
            {
                SignMsg = "两次密码输入不一致";
            }
            else
            {
                SignRegistryUser(SignName, SignPassword1).ContinueWith(Task => 
                {
                    if (Task.IsCompletedSuccessfully)
                    {
                        log.Info("注册请求发送成功");
                    }
                    else
                    {
                        log.Error("注册请求发送失败", Task.Exception);
                        Application.Current.Dispatcher.Invoke(() =>
                        {
                            var loginWindow = Application.Current.Windows.OfType<LoginWindow>().FirstOrDefault();
                            if (loginWindow != null)
                            {
                                loginWindow.SignMsg = "注册请求发送失败，请检查网络连接";
                            }
                        });
                    }
                });
                //log.Info($"向服务器发送注册HttpAPI请求(UserName:{SignName})");
                //SignRegistryUser(SignName, SignPassword1).ContinueWith(task =>
                //{
                //    if (task.IsCompletedSuccessfully)
                //    {
                //        log.Info("注册请求发送成功");
                //    }
                //    else
                //    {
                //        log.Error("注册请求发送失败", task.Exception);
                //    }
                //});
            }
        }
        public static async Task SignRegistryUser(string Username, string Userpassword) 
        {
            var SignData = new
            {
                type = "register",
                username = Username,
                password = Userpassword
            };
            string LoginJsonData = JsonSerializer.Serialize(SignData);
            byte[] dataBytes = Encoding.UTF8.GetBytes(LoginJsonData);
            log.Info($"向服务器发送注册请求(UserName:{Username})");
            // 检查Socket是否可用
            if (MainWindow.Client?.Connected == true)
            {
                MainWindow.Client.Send(dataBytes);
                return;
            }
            log.Info("未连接服务器，尝试异步连接");
            // 异步连接操作
            await Task.Run(() =>
            {
                try
                {
                    MainWindow.Client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                    MainWindow.Client?.Connect(IPAddress.Parse(Server.ServerIP), Server.ServerPort);
                    MainWindow.StartReceive();
                    MainWindow.Client?.Send(dataBytes);
                }
                catch (Exception ex)
                {
                    log.Error($"连接失败: {ex.Message}");
                    MainWindow.Client?.Close();
                    Application.Current.Dispatcher.Invoke(() =>
                    {
                        var loginWindow = Application.Current.Windows.OfType<LoginWindow>().FirstOrDefault();
                        if (loginWindow != null)
                        {
                            loginWindow.SignMsg = "服务器连接失败";
                        }
                    });
                }
            });
        }
        //public static async Task HttpSignRegistryUser(string Username, string Userpassword)
        //{
        //    try
        //    {
        //        var SignData = new
        //        {
        //            type = "register",
        //            username = Username,
        //            password = Userpassword
        //        };
        //        string SignJsonData = JsonSerializer.Serialize(SignData);
        //        byte[] dataBytes = Encoding.UTF8.GetBytes(SignJsonData);
        //        var content = new StringContent(SignJsonData, Encoding.UTF8, "application/json");
        //        var response = await MainWindow.HttpClient.PostAsync($"{Server.ServerUrl}/api/register", content);
        //        var responseBody = await response.Content.ReadAsStringAsync();
        //        log.Info($"注册请求已发送，响应内容: {responseBody}");
        //        var signresponse = JsonSerializer.Deserialize<SignResultData>(responseBody);
        //        if (signresponse!.status)
        //        {
        //            log.Info($"注册成功: {signresponse.message}");
        //            await Login(true, Username, Userpassword);
        //        }
        //        else
        //        {
        //            log.Error($"注册失败: {signresponse.message}");
        //            Application.Current.Dispatcher.Invoke(() =>
        //            {
        //                var loginWindow = Application.Current.Windows.OfType<LoginWindow>().FirstOrDefault();
        //                loginWindow!.SignMsg = signresponse.message;
        //            });
        //        }
        //    }
        //    catch (Exception ex)
        //    {
        //        log.Error("注册请求发送失败", ex);
        //    }
        //    finally
        //    {
        //        log.Info("注册请求已完成");
        //    }
        // }
        public static async Task Login(bool Sign, string Username, string Userpassword)
        {
            // 公共的登录数据准备
            var LoginData = new
            {
                type = "login",
                username = Username,
                password = Userpassword
            };
            string LoginJsonData = JsonSerializer.Serialize(LoginData);
            byte[] dataBytes = Encoding.UTF8.GetBytes(LoginJsonData);
            log.Info($"向服务器发送登录请求(UserName:{Username})");
            // 检查Socket是否可用
            if (MainWindow.Client?.Connected == true)
            {
                MainWindow.Client.Send(dataBytes);
                return;
            }
            log.Info("未连接服务器，尝试异步连接");
            // 异步连接操作
            await Task.Run(() =>
            {
                try
                {
                    MainWindow.Client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                    MainWindow.Client?.Connect(IPAddress.Parse(Server.ServerIP), Server.ServerPort);
                    MainWindow.StartReceive();
                    MainWindow.Client?.Send(dataBytes);
                }
                catch (Exception ex)
                {
                    log.Error($"连接失败: {ex.Message}");
                    MainWindow.Client?.Close();
                    // 根据Sign类型更新UI
                    string errorMsg = Sign ?
                        "在完成注册后与服务器断开连接\n请尝试在登录窗口重新登录" :
                        "服务器连接失败";
                    Application.Current.Dispatcher.Invoke(() =>
                    {
                        var loginWindow = Application.Current.Windows.OfType<LoginWindow>().FirstOrDefault();
                        if (loginWindow != null)
                        {
                            if (Sign) loginWindow.SignMsg = errorMsg;
                            else loginWindow.LoginMsg = errorMsg;
                        }
                    });
                }
            });
        }
        public async void Window_Loaded(object sender, RoutedEventArgs e)
        {
            log.Info("登录窗口已加载");
            if (MainWindow.Client?.Connected == false)
            {
                log.Info("未连接服务器，尝试连接");
                // 异步连接操作
                await Task.Run(() =>
                {
                    try
                    {
                        MainWindow.Client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                        MainWindow.Client?.Connect(IPAddress.Parse(Server.ServerIP), Server.ServerPort);
                        MainWindow.StartReceive();
                    }
                    catch (Exception ex)
                    {
                        log.Error($"连接失败: {ex.Message}");
                        MainWindow.Client?.Close();
                    }
                });
            }
            try
            {
                string tempPath = System.IO.Path.GetTempPath();
                string filePath = System.IO.Path.Combine(tempPath, "chatclient_login.tmp");
                if (System.IO.File.Exists(filePath))
                {
                    string json = System.IO.File.ReadAllText(filePath, Encoding.UTF8);
                    var loginInfo = JsonSerializer.Deserialize <Account> (json);
                    if (loginInfo != null)
                    {

                        UserName = loginInfo.UserName!;
                        NameBox.Text = loginInfo.UserName;
                        UserPassword = loginInfo.UserPassword!;
                        PasswoedBox.Password = loginInfo.UserPassword;
                        SaveAccount = true;

                    }
                }
            }
            catch (Exception ex)
            {
                log.Error("读取临时登录信息失败", ex);
            }
        }
        public void Window_Closing(object sender, CancelEventArgs e)
        {
            if (SaveAccount && !string.IsNullOrEmpty(UserName) && !string.IsNullOrEmpty(UserPassword))
            {
                try
                {
                    string tempPath = System.IO.Path.GetTempPath();
                    string filePath = System.IO.Path.Combine(tempPath, "chatclient_login.tmp");
                    var loginInfo = new { UserName, UserPassword };
                    string json = JsonSerializer.Serialize(loginInfo);
                    System.IO.File.WriteAllText(filePath, json, Encoding.UTF8);
                }
                catch (Exception ex)
                {
                    log.Error("保存登录信息到临时文件失败", ex);
                }
            }
            if (MainWindow.UserId == null) Application.Current.Shutdown(); 
        }
    }
}